My first two .45 ACP revolvers were a pre-model 1955 and a later 25-2.
I spent an enormous amount of time and effort trying to get either to shoot straight with lead bullets. Didn't matter cast or swaged, .451, .452, .454, .455, any powder, any reasonable pressure level. Nothing but leading and horrible groups.
However, with jacketed 230 grain bullets, they both became tack drivers.
Don't know why after the 1955 & 25-2 experience, but I bought a 625-3 with the 5 inch barrel. Didn't matter what I fed it. Lead, jacketed, plated, 185, 200, 230 grain, mild or wild, gun shot everything beautifully and always impressed with remarkable groups.
Bought 4 inch - then a 3 inch. Same boring perfection.
I have become convinced that the 625-3 will shoot anything well.
I may later try loading the cartridges with small rocks, cherry pits and chicken bones and am confident I'll to be impressed.
I'm not fond of the underlug barrels but these 625-3 guns will never be sold by me. You'll have to wait for the estate sale. They are that good in my opinion.